Add. Combine like terms, and write the answer in descending order.(-5v2 + 9v) + (-3 - 6v + 8v2)
A. 3v4 + 3v2 - 3
B. 6v6 - 3
C. 3v2 + 3v + 3
D. 3v2 + 3v - 3
Answer: D
Mathematics
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Write the word phrase as an algebraic expression. Use x to represent the unknown number.The sum of 7 and 5
A. 7 + 5 B. 7 - 5 C. 7 + 5x D. 7 ? 5
Mathematics
First estimate the answer. Then add or subtract to find the exact answer. Write answer as a mixed number. 
A. Estimate: 13; Exact: 13
B. Estimate: 12; Exact: 15
C. Estimate: 12; Exact: 12
D. Estimate: 13; Exact: 12
Mathematics
A statement Sn about the positive integers is given. Write statements S1, S2, and S3, and show that each of these statements is true.Sn: 4 + 9 + 14 + . . . + (5n - 1) = 
What will be an ideal response?
Mathematics
Evaluate the sum. Round to the nearest hundredth if necessary.
A. 16,384 B. 1024 C. 80 D. 1360
Mathematics